Model: Lenovo GM2 Pro
Bluetooth Version: V5.3
Speak Unit: 10 mm
Battery capacity: 40mAh
Usage Time: About 5 hours（Earphones）
Charging Time: About 1 hour（Earphones）
Frequency Range: 2.402-2.480KHz
Transmission Distance: Up to 10 meters / 33 feet
Charging Compartment Battery Capacity：350mAh
⭐⭐⭐⭐⭐ 5/5 rated
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